"Site Categories" Plugin Error Messages

I have installed Site Categories on a Multisite running ProSites and Site Categories. I am getting the following errors for the categories selection.

Warning: implode() [function.implode]: Invalid arguments passed in /home/awsadmin/public_html/wp-content/plugins/site-categories/site-categories.php on line 2008

Warning: array_search() [function.array-search]: Wrong datatype for second argument in /home/awsadmin/public_html/wp-content/plugins/site-categories/site-categories.php on line 2027

Any suggestions?